Robert Demontigny (17 March 1936 – 27 January 2024) was a Canadian singer, actor, producer and television host from Quebec. Biography Joseph Arthur Roméo Patrick Robert Demontigny was born on 17 Ma
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af4b3470881bb68fc933de2c60ad66dbe1fd118b2b426b917b3f5203b9bfccc. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e459283e-d0df-416b-8105-417198de731d.json and https://artists.proofprofile.net/proofs/artist/e459283e-d0df-416b-8105-417198de731d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c2e2795c8ba5b1693f4cb86290c40c20bee69066b958d039fd11bdf54d05d9. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:01:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAZ700100575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ddb317b30cd59c642d317b4abc18f862e0924539cdeef69a366e95e81b8cba. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAZ700100576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bea3bd7686a6a5b8ee94429a578e951043006432663a38faa5760495af25ce0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAZ700100577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882a3879f3e6e03a65174aad9202ec477afabab9e3176549e4e2ccabc4c62554. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAZ700100581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0390b265d7eb7778f7d702693642ec991cd98d14ecfeea186bd33aa9b9d5ebb. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:36:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAZ700100584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4872992bc93392386d1876c22736d5ddf986315f1239e69a58082e75ddb1fa92. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAZ700100585.
Les gars de jeunesse - volume 1 (Remasterisé)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde736d8ac23e0e7377bf91ef270e6a75789210865c982dbb260d641f8554cce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAK922101795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fce68c1bd67838157b96330136d53a469742fe1c43e7a73eb1eb006a2f901c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAK922101909.